Biochemistry

Evidence for the Enosymbiotic Theory

BIOCHM-MEPBKX

The idea that chloroplasts and mitochondria were once free-living bacteria was first proposed by Mereschkowsky and Wallin, respectively, in the early 1900s.

However, the endosymbiotic theory, i.e., that mitochondria and chloroplasts evolved from bacteria following engulfment and the loss/transfer of much of their genetic material to the host nucleus, would not have become well accepted without the championing of Dr. Lynn Margulis beginning in the 1960s.

Identify ALL of the following statements which are NOT strong evidence for the endosymbiotic theory.